I love Ubuntu and Evolution so I installed Evolution on Ubuntu 12.04 when I upgraded recently.

I restored my mail from a backup and on starting Evolution for the first time, received a message about converting my emails and once successful, deleting the mbox versions via Edit -> Preferences -> Mail accounts.

This all worked as expected until I did my first backup and realised that the backup file has doubled in size from about 2GB to 4.2GB.

My mail seems to now be stored in the following folders:

/.local/share/evolution/mail/local_mbox - 4.2 GB
/.local/share/evolution/mail/local - 27.1 MB

I am not sure where I went wrong. I am pretty sure the files were converted as it took quite a long time. Rechecking in Edit -> Preferences -> Mail accounts, I can't see any references to MBOX accounts and I remember deleting the MBOX account after my emails were onverted.

I'd really like to get my mail folders down to a more manageable size if possible if anyone has any advice?

Thanks in advance.